Double-action press



(No Model.) 3 Sheets-$11991: 1.

B. C. MANVILLE.

DOUBLE ACTION PRESS.

No. 460,322. Patented Sept. 29, 1891.

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R. 0. MANVILLE. DOUBLE ACTION PRESS.

No. 460,322. Patented Sept. 29, 1891.

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(No Model.) 3 Sheets-Sheet 3.

R. C. MANVILLE. DOUBLE ACTION PRESS.

No. 460,322. Patented Sept. 29, 1891.

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UNITED STATES PATENT OFFICE.

ROBERT C. MANVILLE, OF VATERBURY, CONNECTICUT.

DOUBLE-ACTION PRESS.

SPECIFICATION forming part of Letters Patent N 0. 460,322, datedSeptember 29, 1891. Application filed April 8, 1890. Serial No. 347,056.(No model.)

To all whom, it may concern: 7

Be it known that I, ROBERT C. MANVILLE, of Vaterbury, in the county ofNew Haven and State of Connecticut, have invented certain new and usefulImprovements in Double- Action Presses, of which the following is afull, clear, and exact description, whereby any one skilled in the artcan make and use the same.

The object of my invention is to provide a shaping-press ofaconstruction with the guide or carrier block so connected to the mainshaft as to provide for the adjustment of the guide and for itsoperation in a manner that shall obviate any chance of tipping ortilting the guide; and to this end my invention consists in details ofthe several parts making up the machine as a whole, and in theirconstruction and combination, as more particularly hereinafterdescribed, and pointed outin the claim.

Referring to the drawings, Figure 1 is a detail front view of the upperpart of a doubleaction press, with parts cut away in vertical centralsection. Fig. 2 is a view in cross-section through the driving-cam andguide. Fig. 3 is a detail perspective view of the yoke. Fig. 4 is adetail perspective view of the guide or carrier block. Fig. 5 is adetail view in elevation, with parts out in section, of a crank-pressembodying my improvements. Fig. 6 is a detail View in cross-sectionthrough the guide or carrier block and driving-shaft of the machineshown in Fig. 5. Fig. 7 is a detail perspective view of the guide orcarrier block; Fig. 8, transverse section through the gate-cutting 011line as a: of Fig. 1, looking downward.

In the accompanying drawings, the letter a denotes the body of thepress, that maybe of any convenient outline and size; I), the frame,usually oblong and with upright side parts provided with guides for thegate; 0, the main shaft, that is mounted in suitable bearingstransversely of the frame and provided with a driving pulley or wheel 0,by means of which the shaft may be rotated. This shaft 0 is providedwith a cam c and cranks 0 the former being used to drive the mainportion of the press and the latter connected up with a yoke thatsupportsthe drivingthrough punch. In place of the cam the equivalentform of crank may be employed, as illustrated in Figs. 5 and (3 of thedrawings.

The slide or gate (1 is connected to the shaft by means of theconnecting-rod e, and is mounted between the side parts of the frame orguides on runways that are provided on the inner sides of the uprightsin such manner as to admit of a vertical sliding movement of the gate onits supports, and in the form of gate shown in Fig. 1 the connectingrodpasses through an opening or socket in the center of the upper part ofthe gate, in which it is held against rotation by means of a spline orkey at, that is clearly shown in the perspective view in Fig. 4 of thedrawings.

The connecting-rod e is threaded and provided with a pair of jam-nuts e6 above and below the cross-bar of the slide or gate through which therod 6 passes. The gate has its central portion cut away so as to giveroom for the yoke and connecting-rods that form part of thedrawing-through-punch mechan ism and enables the drawing-through punchto be located in the axial center of the gate and directly below themain cam or crank. This forms a connection that is central of the gateand provides for as fine an adjustment of the slide as may be required,the central location of 'the connecting parts and the means ofadjustment preventing any tipping or tilting of the gate in theoperation of the parts.

The construction of the gate and the combination of the cross-headtherewith are illustrated in Fig. 8 on an enlarged scale. The cuttingaway of the central portion of the gate forms a chamber within which thecross-head g may work up and down. The length of this recess correspondssubstantially to the extreme length of the cross-head, and on the frontor one side of the gate gibs or side pieces m are applied, which overlapthe chamber thus formed in the cross-head, and, as clearly seen in Fig.8, these gibs are attached by means of screws, as seen in Fig. 4, orotherwise, so as to be readily removable, to open the chamber. Theportions n n of the cross-head each side of the center are of a widthcorresponding to the width between the inside of the gibbs m and thecorresponding opposite sides of the chamber in the gate, and so thatthese portions of the cross-head may work up and down between the saidgibs and the corresponding opposite sides of the chamber in thecross-head rods, may take a bearing on their respective sides of thechamber, so as to guide the crosshead laterally. Thus the cross-head isguided to prevent its longitudinal or lateral movement, and also toprevent its forward and back movement. It is thus held firmly, yet freeto be moved up and down in the gate in the operation of the press. Theopenings 19 p in the upper end of the gate, and which extend into thecross-head chamber, are elongated, as shown in Fig. 4, so as to permitthe swinging movement of the rods g in the operation of the press. Theconnection between the gate and the shaft being central and theconnections between the shaft and the crosshead being at each side ofthis central connection of the gate permits this arrangement of thecross-head, whereby it may stand in an actual central position and befirmly guided and operated.

The die-block f is secured to the lower face of the slide in anyconvenient manner, as by a dovetailed joint and a key or Wedge. Onopposite sides of the central main cam c the yoke g is connected to thecrank on the shaft 0, the side rods g passing through openings 19 in thegate (1 and pivotally connected within the latter to the cross-head g,to the center of which is adjustably connected the punch h or itsspindle. The spindle of the punch is threaded, and nuts h h", borne onit above and below the cross-head, serve as means of adjustment, so thatthe location of the path of movement of the punch may be accuratelydetermined.

In Fig. 5 the press is shown with the connect-ing-rod e secured to thegate by a slightlydiiterent although equivalent means of con- .nectionto that shown in Figs. 1 and 20f the drawings. In the former a cam isused to drive the main press, and the connecting means consist of ayoke, (shown in Fig. 2,) the cross-bars of the yoke Zbearinganti-friction rollers Z in a line with the center of the connecting-rodand path of movement of the gate. The cross-bars are connected by boltsprovided with means of adjustment for taking up any wear between theparts.

In Fig. 5 the gate is shown as connected by the rod 6 to a crank by anordinary strap device, and the adjustingmeans are located between thecrank and the point of pivotal connection between the rod e and the gated.

I claim as my invention In a double-acting press, the gate arranged insuitable guides in the frame, combined with a vertical centralconnection between the gate and the driving-shaft, whereby verticalreciprocat-i-ng movement is imparted to the said gate, the gateconstructed with a' vertical cen-.

tral recess therein, forming a chamber open to one side of the gate,that side of the gate provided with removable gibs, a cross-headarranged in said chamber, the said gibs and the opposite sides of thechamber forming guides for the vertical reciprocating movement of saidcross-head, the cross-head constructed with trunnions at each end, theupper end of the gate constructed with open-' ings corresponding inposition substantially to the said trunnions, connecting-rods lhung bytheir upper end to corresponding cranks on the driving-shaft andextending through the said openings in the upper end of the gate down toand hung upon said trunnions of the cross-head, the said cross-headadapted to carry the punch working through the lower end of the gate,substantially as described.

ROBERT C. MANVILLE. Witnesses:

W. W. MANVILLE, M. 1-1. BRENNAN.

